/**
  ******************************************************************************
    @file    stm32f1xx_hal_gpio_ex.c
    @author  MCD Application Team
    @brief   GPIO Extension HAL module driver.
            This file provides firmware functions to manage the following
             functionalities of the General Purpose Input/Output (GPIO) extension peripheral.
              + Extended features functions

    @verbatim
    ==============================================================================
                    ##### GPIO Peripheral extension features #####
    ==============================================================================
    [..] GPIO module on STM32F1 family, manage also the AFIO register:
       (+) Possibility to use the EVENTOUT Cortex feature

                     ##### How to use this driver #####
    ==============================================================================
    [..] This driver provides functions to use EVENTOUT Cortex feature
    (#) Configure EVENTOUT Cortex feature using the function HAL_GPIOEx_ConfigEventout()
    (#) Activate EVENTOUT Cortex feature using the HAL_GPIOEx_EnableEventout()
    (#) Deactivate EVENTOUT Cortex feature using the HAL_GPIOEx_DisableEventout()

    @endverbatim
  ******************************************************************************
    @attention

    <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>

    Redistribution and use in source and binary forms, with or without modification,
    are permitted provided that the following conditions are met:
      1. Redistributions of source code must retain the above copyright notice,
         this list of conditions and the following disclaimer.
      2. Redistributions in binary form must reproduce the above copyright notice,
         this list of conditions and the following disclaimer in the documentation
         and/or other materials provided with the distribution.
      3. Neither the name of STMicroelectronics nor the names of its contributors
         may be used to endorse or promote products derived from this software
         without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

  ******************************************************************************
*/

/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"

/** @addtogroup STM32F1xx_HAL_Driver
    @{
*/

/** @defgroup GPIOEx GPIOEx
    @brief GPIO HAL module driver
    @{
*/

#ifdef HAL_GPIO_MODULE_ENABLED

/** @defgroup GPIOEx_Exported_Functions GPIOEx Exported Functions
    @{
*/

/** @defgroup GPIOEx_Exported_Functions_Group1 Extended features functions
    @brief    Extended features functions

    @verbatim
    ==============================================================================
                 ##### Extended features functions #####
    ==============================================================================
    [..]  This section provides functions allowing to:
    (+) Configure EVENTOUT Cortex feature using the function HAL_GPIOEx_ConfigEventout()
    (+) Activate EVENTOUT Cortex feature using the HAL_GPIOEx_EnableEventout()
    (+) Deactivate EVENTOUT Cortex feature using the HAL_GPIOEx_DisableEventout()

    @endverbatim
    @{
*/

/**
    @brief  Configures the port and pin on which the EVENTOUT Cortex signal will be connected.
    @param  GPIO_PortSource Select the port used to output the Cortex EVENTOUT signal.
      This parameter can be a value of @ref GPIOEx_EVENTOUT_PORT.
    @param  GPIO_PinSource Select the pin used to output the Cortex EVENTOUT signal.
      This parameter can be a value of @ref GPIOEx_EVENTOUT_PIN.
    @retval None
*/
void HAL_GPIOEx_ConfigEventout(uint32_t GPIO_PortSource, uint32_t GPIO_PinSource)
{
    /* Verify the parameters */
    assert_param(IS_AFIO_EVENTOUT_PORT(GPIO_PortSource));
    assert_param(IS_AFIO_EVENTOUT_PIN(GPIO_PinSource));
    /* Apply the new configuration */
    MODIFY_REG(AFIO->EVCR, (AFIO_EVCR_PORT) | (AFIO_EVCR_PIN), (GPIO_PortSource) | (GPIO_PinSource));
}

/**
    @brief  Enables the Event Output.
    @retval None
*/
void HAL_GPIOEx_EnableEventout(void)
{
    SET_BIT(AFIO->EVCR, AFIO_EVCR_EVOE);
}

/**
    @brief  Disables the Event Output.
    @retval None
*/
void HAL_GPIOEx_DisableEventout(void)
{
    CLEAR_BIT(AFIO->EVCR, AFIO_EVCR_EVOE);
}

/**
    @}
*/

/**
    @}
*/

#endif /* HAL_GPIO_MODULE_ENABLED */

/**
    @}
*/

/**
    @}
*/

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
